We must now inquire about the seal of confession, about which there are five points of inquiry:

(1) Whether in every case a man is bound to hide what he knows under the seal of confession?

(2) Whether the seal of confession extends to other matters than those which have reference to confession?

(3) Whether the priest alone is bound by the seal of confession?

(4) Whether, by permission of the penitent, the priest can make known to another, a sin of his which he knew under the seal of confession?

(5) Whether he is bound to hide even what he knows through other sources besides?